PN spread spectrum communication systems
New PN Even Balanced Sequences for Spread Spectrum Systems
... DSSS communication systems. In DSSS systems employing BPSK modulation, spreading is achieved by multiplying or modulating a low symbol (bit) rate binary information sequence with a pseudonoise ...
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Effect of Length on Correlation of PN Sequence and Gold Sequence
... ABSTRACT: Spread spectrum modulation technique is different from the conventional communication ...of spread spectrum communication systems intern CDMA (code division ...
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Comparative Simulation & Analysis of 2- PSK Spreading Transceiver
... personal communication system (PCS), which usually co-exist in the ...digital communication has been that of providing for the efficient utilization of bandwidth and ...primary communication ...
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DIFFERENT SPREADING SEQUENCES FOR PERFORMANCE COMPARISON OF DS-SS SYSTEM B Ch Kiran Patrudu*, D.Anil Prasad, B Ravi Kumar
... Spread spectrum techniques have been widely used in wired and wireless ...signal spectrum gives us many advantages such as robustness against interference and noise, low probability of intercept, ...
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Implementation of Direct Sequence Spread Spectrum Communication System Using FPGA
... of spread spectrum technology for data transfer to overcome the interference problems associated with narrow band, very high frequency and ultra high frequency data transfer ...The spread ...
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Chaos based Communication System Using Reed Solomon (RS) Coding for AWGN & Rayleigh Fading Channels
... telecommunication systems appears in a conventional digital spread spectrum, where the information is spread over a wider band by using a chaotic signal instead of the usual periodic sequence, ...
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BER Calculation for CDMA System Using PN & Gold Sequence
... schemes. Spread Spectrum is a method of transmission in which the data sequence occupies a bandwidth in excess of the minimum bandwidth necessary to send it ...[1]. Spread spectrum techniques ...
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Broadband Interference Excision in Spread Spectrum Communication Systems Based on Short-Time Fourier Transformation
... [20]. In the simulations, the channel is modeled by AWGN and zero- mean white Gaussian noise is mixed to the modulated data. The interference excision algorithm is employed at the receiver as in Fig. 2. At first, STFT of ...
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Effect of length on Correlation of PN sequence and Gold sequence
... Wireless Communication System” regards performance analyses of Direct Sequence Code Division Multiplexing (DS-CDMA), Multi-Tone (MT) CDMA, Multi-Carrier (MC) CDMA and MC-DS-CDMA transmission systems are ...
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FPGA Implimentation of DSSS Transmitter Using Pseudo Chaotic Sequence
... In spread spectrum communication systems, Pseudo noise sequence is used to spread the bandwidth of transmitting ...in spread spectrum ...non-linear systems which ...
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Ber Improvement Of Ds-Cdma For Awgn And Rayleigh Fading Channel With Kasami Code
... wireless communication becomes a worldwide communication standard for transferring the data, the main challenge is to transfer the information as efficiently and reliably as possible through the limited ...
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Design of a High Range, High Efficiency Spread Spectrum Transmitter for Audio Communication Applications
... and oscillator mismatches [9, 10] are of importance because of high frequency implementation compared to heterodyne transmitter. The equality of upconverter and output spectrum center frequency makes LO pulling ...
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PLACEMENT AND SIZING OF DISTRIBUTED GENERATORS IN DISTRIBUTED NETWORK BASED ON LRIC AND LOAD GROWTH CONTROL
... satellite communication network can be independent of the ground through inter-satellite link in ...satellite communication link has become the weak link of satellite network system security and ...
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Design and Implementation of Wireless Gas Meter Reading System Based on Spread Spectrum Communication
... and spread spectrum communication chip SX1278 are ...the spread spectrum communication transmission of data and instructions, data concentrator and gas management system through ...
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Narrow-Band Interference Suppression in CDMA Spread-Spectrum Communication Systems Using Pre-Processing Based Techniques in Transform-Domain
... The performance of a DS-CDMA communication system against narrow-band interference can be improved by using the interference suppression techniques [2–8]. Among the techniques which have been proposed in recent ...
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INFORMATION HIDING TECHNIQUE: DIGITAL WATERMARKING
... the spread spectrum communication technique. The spread spectrum watermarking schemes are the use of spread spectrum communication in digital ...in ...
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An Efficient Method of Spread Spectrum Logon for Satellite Terminal in DVB Systems
... satellite communication system, the antenna of the portable mobile terminal has a small aperture, and there is a risk of frequent online and offline in the case of movement and the logon process is ...CRMA-based ...
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Filter Bank Based Narrowband Interference Detection and Suppression in Spread Spectrum Systems
... sequence spread spectrum (DS-SS) systems have sev- eral applications, for example, CDMA communications and advantages, low power spectral density, privacy of the com- munications, and an inherent ...
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Detection of Brain Tumor using GVF and Watershed Segmentation
... wireless communication services are growing, the demand of frequency resource is ...the spectrum effectively, we need to identify whether the spectrum is occupied or ...unused spectrum band in ...
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Study on the Intelligent Monitoring System of Dry Type Water Meter Based on the Technology of Non Magnetic Pulse Acquisition and Spread Spectrum Communication
... and spread spectrum communication is introduced, and the composition of the system is described, including intelligent water meter and concentrator, community management and management ...
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